Centrifugal separating apparatus



April 15, 1952 R. J. GOLDBERG 2,593,294

CENTRIFUGAL SEPARATING APPARATUS Fild July 21. 1947 2 SHEETS--SHEET l ROBERT J. GOLDBERG FIG. I INVENTOR BYW ATTO R N EY April 1952 R. J. GOLDBERG 2,593,294

CENTRIFUGAL SEPARATING APPARATUS Filed July 21. 1947 2 SHEETS-SHEET 2 FIG.2

ROBERT J. GOLDBERG INVENTOR.

FIG.3 W W ATTORNEY Patented Apr. 15, 1952 CENTRIFUGAL SEPARATIN G APPARATUS Robert J. Goldberg, New York, N. Y., assignor of fifty per cent to Max Goldberg, New York, N. Y.

Application July 21, 1947, Serial No. 762,334

This invention relates to centrifugal separating apparatus and particularly to an apparatus especially adapted for the separation of solid particles from air or gas.

An object of this invention is to provide eifec-' particles follow the inner portions of the blades and along radial extensions of the blades and discharged in a separate dust chamber.

Another object of this invention is to provide a rotary separator for separating and classifying particles of material of difi'erent specific gravities whereby materials of predetermined difference in specific gravity may be separated.

With the above and other objects in view, the invention will be hereinafter more particularly described, and the combination and arrange.

ment of parts will be shown in the accompanying drawings and pointed out in the claims whichform part of this specification.

Reference will now be had to the drawings,

wherein like numerals of reference designate corresponding parts throughout the several views,

in which:

Figure 1 is a central cross-sectional view of the separating apparatus.

Figure 2 is a cross-sectional view, the sectional view being taken. as on line 22 in Figure 1. Figure 3 is a bottom plan view of the rotor. In the illustrated embodiment of the invention, the numeral it] indicates a centrifugal separating apparatus comprising a stationary outer casing or housing I l which is suitably supported on a leg shaped housing [2.

The upper portion l3 of the casing H is of conical form and terminates in a hub M for a ball bearing 15 and a shaft it. A pulley ll fixed to the shaft i5 serves for transmitting power to the shaft.

Mounted on the shaft 15 is a conical impeller or rotor I8 having a conical casing I 9 and redially positioned blades 20. The blades are angularly'directed and form a conical outer contour,

iii)

2 Claims. (0]. 233-27) 2 The rotor l8 comprises the casing l9 and the blades secured in unitary relation and rotatable in unitary relation with the shaft IS.

The blades 20 extend below the rotary casing 19. The lower face of the rotary casing l9 terminates in the same plane as the lower surface of a horizontally positioned casing wall :21.

The blades 20 extend into an annularly-shaped chamber 22 and terminate substantially at the upper face of a horizontally positioned casing wall 23.

It is to be noted that the space between any two blades 20 forms a discharge outlet 25 through which the light and heavyvparticles pass downwardly and radially.

The heavier particles are precipitated upon the outer edge portions of the blades 2|] and are guided downwardly by the inner surface of the conical casing l9 to a point 26 on the blades. The heavy particles are thrown off the blades by centrifugal force and pass through the chamber 22 and feed into and through an outlet 21.

Where particles much heavier than air are processed, a valve arrangement 30 is employed to allow air to enter. The valve arrangement 30 comprises a housing 3| integral with the casing II and in which is slidably mounted a shaft 32.' Secured to the shaft 32 is a valve 33 which is normally kept closed by asp ring 34.

Suction in the annularly shaped chamber 22 causes the valve 33 to open against the closing action of the spring 34 and allows air to enter into an extension 35 of the chamber 22.

The blades 23 have radial extensions 35 below the discharge outlets 25 and below the diskshaped wall 23 and form discharge outlets 3? for dischargeof lighter separated material. As best shown in Figure 1, it will be seen that the radial extensions 38 are of larger diameter than the largest diameter of the impeller, as defined by the numeral 25.

The lighter particles follow the inner edge portions of the blades 23, past the wall 23 along the blade extensions or tips 33 into an annularly shaped chamber 38 between the horizontal casing wall 23 and the lowest wall 33.

The light particles are thrown oil the blade extensions 36 and pass through the chamber 38 and feed into and through an outlet 43.

It is to be noted that while I have shown the apparatus as mounted to rotate on a vertical shaft, that the entire apparatus may be turned ninety degrees with the shaft in a horizontal plane.

The valve 33 permits a 1. wot air as shown by ing the blades 20.

the arrow in the extension 35. This air prevents the discharge of the pre-determined lighter material through the outlet 21. This material will thus continue its outward passage through the outlet 40.

As shown in Figure 1, the outlet 21 terminates in a storage box 42 which is closed by a removable flange M. The flange serves for removing the material deposited in the outlet 21.

Under conditions where dust laden air is to be separated, I provide a valve arranged to permit the discharge of air from the chamber 2'1. This air may be discharged into a porous dust container or into the atmosphere.

As shown in Figure 1, there is provided a stationary conical central member 42 adjacent the inner edges of the blades 20 and having a central opening 43 through which the material passes to the blades.

It will be noted that the chamber 38 for the lighter separated material is considerably larger than the chamber 22 for the heavier separated material.

It will also be noted that the inner peripheral portion of the annular casing wall 23 overhangs the outer edge portions of the blades 20 where the blades are undercut as shown at 44. This overhang arrests the motion of the heavy particles and directs the particles radially into the chamber 42.

The arresting motion of the internal annular wall 23 on the particles to be separated functions to positively separate the particles prior to leav- In accordance with the patent statutes 1 have described and illustrated the. preferred embodiment of my invention, but it will be understood that various changes and modifications can be made therein without departing from the spirit of the invention as defined by the appended claims.

I claim:

1. In a centrifugal separating apparatus having an axial inlet opening and conically directed flat radial blades carried by a circumscribing solid internally conical rotary member, said rotary member being integral with and confining said blades and causing materials to be separated to follow, the conical contour of said memher, a stationary conical outer casing inclosing said rotary member, and terminating in an enlarged peripheral extension having upper and lower walls, said extension having an internal annular wall between said upper and lower walls forming an upper and a lower discharge chamber, the lower edge of said conical rotary member terminating in spaced-apart relation from said internal annular wall, said upper chamber serving for receiving the discharged heavy material, said blades having fiat radial extensions below said internal annular wall and forming radial discharge outlets therebetween for discharge of light separated materiaLsaid flat blades being undercut to permit said internal annular wall to enter thereinto to positively separate said particles prior to leaving said blades, and a stationary conical central member adjacent the inner edges of said blades for confining said light particles during passage through said separating apparatus. 1

2. In a centrifugal separating apparatus having an axial inlet opening and conically directed fiat radial blades carried by a circumscribing solid internally conical rotary member, said rotary member being integral with and confining said blades and causing materials to be separated to follow the internal conical contour of said member,a stationary conical outer casing inclosing said rotary member ancLterminating in an enlarged peripheral extension having upper and lower walls, said extension having an internal annular wall between said upper and lower-walls forming an upper and a lower discharge chamber, the lower edge of said conical rotary member terminating in spaced-apart relation from said internal annular wall, said upper chamber serving for receiving the discharged heavy material, said blades having flat radial extensions below said internal annular wall of larger diameter than the largest diameter of said rotary conical member and forming radial discharge outlets therebetween for discharge of light separated material, said flat blades being undercut to permit said internal annular wall to enter thereinto to positively separate said particles prior to leaving said blades, a stationary conical central member adjacent the inner edges of said blades for confining said light particles during passage through said separating apparatus, and means for admitting air into said upper heavy particle chamber to augment the flow of the lighter par.- ticles into the lower lighter particle chamber.

. ROBERT J. GOLDBERG.

. REFERENCES CITED The following references are of record in the file of this patent:

UNITED STATES PATENTS Number Name 7 Date 945,592 Phillips Jan. 4, 1910 1,004,760 Fetzer Oct. 3, 1911 1,067,766 Sievers et al July 15, 1913 1,339,211 McKerahan May 4, 1920 1,527,069 Peck Feb. 17, 1925 1,712,184 Wendel May 7, 1929 1,785,918 Stebbins Dec. 23, 1939 1,941,449 Sylvan Jan. 2, 1934 2,091,329 Nyrop Aug. 31, 1937 2,199,849 Bryson May 7, 1940 

